65165809625 has 32 divisors (see below), whose sum is σ = 93023953152. Its totient is φ = 44647200000.

The previous prime is 65165809571. The next prime is 65165809627. The reversal of 65165809625 is 52690856156.

It is a de Polignac number, because none of the positive numbers 2^k-65165809625 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65165809627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1019870 + ... + 1081880.

It is an arithmetic number, because the mean of its divisors is an integer number (2906998536).

Almost surely, 2^65165809625 is an apocalyptic number.

It is an amenable number.

65165809625 is a deficient number, since it is larger than the sum of its proper divisors (27858143527).

65165809625 is a wasteful number, since it uses less digits than its factorization.

65165809625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63234 (or 63224 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 65165809625 in words is "sixty-five billion, one hundred sixty-five million, eight hundred nine thousand, six hundred twenty-five".